GST-W300G-1A2JF Case Size (H×W×D) Length: Approx. 55.9mm Width: Approx. 49.3mm Thickness: Approx. 15.3mm Material: Case: Resin & Metal (Urethane & Stainless Steel / Partially Blue IP Treatment) Band: Resin Band (Urethane Band) Dial Color: Black Buckle: Pin Buckle Movement: Quartz (Tough Solar) Water Resistance: 20 ATM Weight: Approx. 84g Key Features ・ Resin Strap (Urethane Strap) ・ Inorganic Glass ・ Neobrite ・ Water-Resistant to 20 atm ・ Tough Solar (Solar Charging System) ・ Radio Wave Reception: Automatic Reception (up to 6 times/day; up to 5 times/day for Chinese signals) / Manual reception, Reception signal: JJY, Frequency: 40 kHz / 60 kHz (Model compatible with both Fukushima and Kyushu stations) Reception signal: WWVB, Frequency: 60 kHz Reception signal: MSF / DCF77, Frequency: 60 kHz / 77.5 kHz Signal: BPC, Frequency: 68.5 kHz * When the home time setting is set to a city where reception is available, the watch will receive the signal from the station corresponding to that city. The time zone difference is set based on the selected city. ・ Hand-retraction function (When the hands overlap with the LCD display and make it difficult to read, the hands can be temporarily retracted from over the display) ・ World Time: Time display for 48 cities worldwide (31 time zones, with daylight saving time setting) + UTC (Coordinated Universal Time); home time city swap function ・ Stopwatch (1/100-second resolution, 60-minute counter, with split times) ・ Timer (Set in 1-second increments, maximum set time: 100 minutes, measured in 1-second increments) ・ 5 alarms (with countdown function) and hourly chime ・ Battery indicator display ・ Power-saving function (the display turns off after a set period in dark environments to conserve power) ・ Full-auto calendar ・ 12/24-hour format switch ・ Operation sound ON/OFF switch ・ Dual LED lights Dial LED light (with full auto light, afterglow function, and afterglow duration switch (1.5 seconds/3 seconds)), LCD LED backlight (with full auto light, afterglow function, and afterglow duration switch (1.5 seconds/3 seconds)) ・ Operating time from a full charge without solar power When functions are in use: Approx. 7 months In power-saving mode: Approx. 18 months ・ Home Time Cities (Cities supported by the reception function) / Reception Signals Tokyo, Seoul, Taipei / Japanese standard signals JJY40 and JJY60 (Honolulu), (Anchorage), Vancouver, Los Angeles, Edmonton, Denver, Mexico City, Chicago, New York, Halifax, St. John’s / U.S. standard signal WWVB Lisbon, London, Madrid, Paris, Rome, Berlin, Stockholm, Athens, (Moscow) / UK standard signal MSF, German standard signal DCF77 Hong Kong, Beijing / Chinese standard signal BPC